Associate Professor CHI Chunyan




Ph.D, Max-Planck-Institute for Polymer Research, Germany, 2004; Postdoctoral, University of California at Santa Barbara, USA, 2007.

Contact Information

Office: MD1-14-03G
Tel: (65)-6516-5375 | Fax: (65)-6779-1691
Email: chmcc@nus.edu.sg | Personal webpage


 

ORCID: 0000-0003-4677-3546
ResearcherID: H-8684-2013

 

Recognition and Achievements

  • International Advisory Board Member, Journal of Materials Chemistry C, 2017-present
  • Distinguished Lectureship Award from Chemical Society of Japan, 2017
  • Department Young Chemist Award, Department of Chemistry, NUS, 2016
  • Asian Core Program Lectureship Award from Japan, China and Taiwan, 2013 & 2014

 

Research Interests

We are interested in the development of novel pi-structures and synthesis of high performance conjugated materials for organic electronics and sensors.

 

Research Highlight

Ref.: Dong, S.; Gopalakrishna, T. Y.; Han, Y.; Phan, H.; Tao, T.; Ni, Y.; Liu, G.; Chi, C., Extended Bis(anthraoxa)quinodimethanes with Nine and Ten Consecutively Fused Six-membered Rings: Neutral Diradicaloids and Charged Diradical Dianions/Dications. J. Am. Chem. Soc. 2019, 141, 62.

Two O-containing quinoidal acene analogs with the record length were synthesized. The intrinsic open-shell diradical character of longer one led to an unexpected substitution reaction. The dication and dianion of shorter molecule turned out to be open-shell diradicaloids, while for longer molecule, its dication and dianion are both closed-shell compounds, which can be explained by their different intramolecular Coulomb repulsion and charge distribution. Their dications can be regarded as the isoelectronic structure of the respective nonacene and decacene, but they are much more stable.

 

Teaching Contributions

  • CM3252 Polymer Chemistry 1
  • CM4258 Advanced Polymer Science
  • CM5268 Advanced Organic Materials

 

Representative Publications 

  • Dong, S.; Gopalakrishna, T. Y.; Han, Y.; Chi, C., Cyclobis(7,8-(para-quinodimethane)-4,4'-triphenylamine) and Its Cationic Species Showing Annulene-like Global (Anti)Aromaticity. Angew. Chem. Int. Ed. 2019, 58, 11472.
  • Dong, S.; Gopalakrishna, T. Y.; Han, Y.; Phan, H.; Tao, T.; Ni, Y.; Liu, G.; Chi, C., Extended Bis(anthraoxa)quinodimethanes with Nine and Ten Consecutively Fused Six-membered Rings: Neutral Diradicaloids and Charged Diradical Dianions/Dications. J. Am. Chem. Soc. 2019, 141, 62.
  • Jiang, Q.; Tao, T.; Phan, H.; Han, Y.; Gopalakrishna, T. Y.; Herng, T. S.; Li, G.; Yuan, L.; Ding, J.; Chi, C., Diazuleno-s-indacene Diradicaloids: Syntheses, Properties, and Local (anti)Aromaticity Shift from Neutral to Dicationic State. Angew. Chem. Int. Ed. 2018, 57, 16737.
  • Yuan, L.; Han, Y.; Tao, T.; Phan, H.; Chi, C., Formation of a Macrocycles-in-a-Macrocycle Superstructure with All-gauche Conformation by Reversible Radical Association. Angew. Chem. Int. Edit. 2018, 57, 9023-9027.
  • Wang, Q.; Gopalakrishna, T. Y.; Phan, H.; Herng, T. S.; Dong, S.; Ding, J.; Chi, C., Cyclopenta Ring Fused Bisanthene and Its Charged Species with Open-Shell Singlet Diradical Character and Global Aromaticity/ Anti-Aromaticity. Angew. Chem. Int. Edit. 2017, 56, 11415-11419.
  • Dong, S.; Herng, T. S.; Gopalakrishna, T. Y.; Phan, H.; Lim, Z. L.; Hu, P.; Webster, R. D.; Ding, J.; Chi, C., Extended Bis(benzothia)quinodimethanes and Their Dications: From Singlet Diradicaloids to Isoelectronic Structures of Long Acenes. Angew. Chem. Int. Edit. 2016, 55, 9316-9320. [Hot Paper]
  • Dai, G.; Chang, J.; Luo, J.; Dong, S.; Aratani, N.; Zheng, B.; Huang, K.-W.; Yamada, H.; Chi, C., Z-Shaped Pentaleno- Acene Dimers with High Stability and Low Band Gap. Angew. Chem. Int. Ed., 2016, 55, 2693-2696. [Highlighted in SYNFACTS 2016, 12, 0360].
  • Shi, X.; Kueh, W.; Zheng, B.; Huang, K.W.; Chi, C., Dipolar Quinoidal Acene Analogues as Stable Isoelectronic Structures of Pentacene and Nonacene. Angew. Chem. Int. Edit. 2015, 54, 14412-14416. [Highlighted in SYNFACTS 2016, 12, 0034].